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compareHitHistograms.C
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1 // This file is part of the Acts project.
2 //
3 // Copyright (C) 2017 CERN for the benefit of the Acts project
4 //
5 // This Source Code Form is subject to the terms of the Mozilla Public
6 // License, v. 2.0. If a copy of the MPL was not distributed with this
7 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 
9 /*
10  * compareHitHistograms.C
11  *
12  * Created on: 15 Dec 2016
13  * Author: jhrdinka
14  */
15 
16 #include <tuple>
17 #include "TFile.h"
18 #include "TH1F.h"
19 #include "TROOT.h"
20 #include "TTree.h"
21 
22 // This root script draws all histograms given in a vector into the same Canvas.
23 // The information should be handed over as a vector of a tuple.
24 // The first entry should be the Name of the file, where the histogram can be
25 // found. The second entry should be the name of the histogram. The third entry
26 // is the color in which the histogram should be printed.
27 
28 void
30  std::vector<std::tuple<std::string, std::string, int>> hist)
31 {
32  for (auto& i : hist) {
33  std::cout << "Opening file: " << std::get<0>(i).c_str() << std::endl;
34  TFile inputFile(std::get<0>(i).c_str());
35  TDirectory dir = outputFile.mkdir(layerName.c_str());
36  dir->cd();
37 
38  std::cout << "Comparing Histogram: " << std::get<1>(i).c_str() << std::endl;
39 
40  TH2F* h = (TH2F*)inputFile.Get(std::get<1>(i).c_str());
41  h->SetMarkerColor(std::get<2>(i));
42  h->Draw("same");
43  h->SetDirectory(0);
44 
45  inputFile.Close();
46  }
47 }